Re: [Help-smalltalk] Using Smalltalk as a scripting language

[Paolo Bonzini]

On 10/29/2009 10:46 PM, Roland Plüss wrote:
> When I get this correctly then this would be in fact gst_object_alloc(
> oopClass, numberOfCOnlyBytes ); where numberOfCOnlyBytes is the number
> of bytes I append to the struct which is not accessible to smalltalk. So
> far so right?

Yes, right.  numberOfCOnlyBytes can actually be just sizeof (void *) 
with the C data stored "on the side".  You choose (remember that if you 
place data in the Smalltalk object you have to deal with the GC moving 
the objects).

> So I assume if I want to use this approach I have to
> provide a cCall for #new which creates the object using the prior
> mentioned gst_object_alloc bypassing the smalltalk creation call. Sounds
> like quite the hack but it looks like it could work out.

Doesn't seem to bad.  Most likely you'd have a cCall for #initialize 
anyway.  Having one for #new instead does not change much.

Paolo